EP0295569B1 - Reversing mechanism for an outboard propulsion power leg - Google Patents

Reversing mechanism for an outboard propulsion power leg Download PDF

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Publication number
EP0295569B1
EP0295569B1 EP88109167A EP88109167A EP0295569B1 EP 0295569 B1 EP0295569 B1 EP 0295569B1 EP 88109167 A EP88109167 A EP 88109167A EP 88109167 A EP88109167 A EP 88109167A EP 0295569 B1 EP0295569 B1 EP 0295569B1
Authority
EP
European Patent Office
Prior art keywords
reverser
drive shaft
clutches
pistons
crown
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
EP88109167A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0295569A1 (en
Inventor
Vincenzo De Stefani
Giovanni Zorzi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MPM Meccanica Padana Monteverde SpA
Original Assignee
MPM Meccanica Padana Monteverde SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11252033&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0295569(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MPM Meccanica Padana Monteverde SpA filed Critical MPM Meccanica Padana Monteverde SpA
Publication of EP0295569A1 publication Critical patent/EP0295569A1/en
Application granted granted Critical
Publication of EP0295569B1 publication Critical patent/EP0295569B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/14—Transmission between propulsion power unit and propulsion element
    • B63H20/20—Transmission between propulsion power unit and propulsion element with provision for reverse drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/30—Transmitting power from propulsion power plant to propulsive elements characterised by use of clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/14—Gearings for reversal only
    • F16H3/145—Gearings for reversal only with a pair of coaxial bevel gears, rotatable in opposite directions

Definitions

  • the present invention relates to a reversing mechanism for an outboard propulsion power leg.
  • the aim of the present invention is to eliminate the disadvantages described above in known types by providing a reversing mechanism for an out board power leg, of the type wherein the reversing devices are contained in the power leg itself, which is easily manoeuvrable and characterized by a gradual shock- free engagement
  • an important object is to provide a reverser with clutches engaged by high pressures.
  • Another object is to provide a reverser having compact dimensions.
  • Not least object is to achieve low costs obtainable with ordinary systems.
  • a reversing mechanism for an outboard propulsion power leg of the type wherein the reversing devices are contained in the power leg itself see US-A-3556041, characterized in that it comprises two clutches drawing the motion directly from the drive shaft and each acting alternately on a driven gear which actuates the propeller shaft, each of said clutches having a hydraulic engagement piston, said hydraulic pistons being fed by a pump keyed on the drive shaft and contained in the power leg.
  • the power leg comprises a hydraulic circuit connecting said pump to said pistons through a distributor, said hydraulic circuit comprising means for the lubrication of the entire power leg.
  • the power leg reverser is generally indicated by the reference numeral 1, and comprises a body 2 containing two seats with coinciding axes, respectively 3 and 4, for bearings 5 and 6 for supporting a drive shaft 7.
  • a disk-like element 8 is keyed on said drive shaft 7 between said bearings 5 and 6, by means of keys 9 and 10.
  • the disk-like element 8 is formed by a cylindrical hub 9 which extends externally and symmetrically with respect to its transverse axis into a disk 10 bearing an outer annular crown 11 which is also symmetrical with respect to the transverse axis.
  • the disk-like element 8 defines, between the outer surfaces of the hub 9 and the inner surfaces of the crown 11, two annular seats for two mutually symmetrical hydraulic pistons, respectively indicated at 12 and 13.
  • the seats 14, 14a, 15 and 15a for sealing rings are provided on the outer surfaces of the hub and of the pistons.
  • the outer annular crown 11 has symmetrically arranged longitudinal threaded holes 16.
  • Said holes 16 are seats for screws 17 which couple the disk-like element 8 to two mutually symmetrical plate type clutches, respectively 18 and 19.
  • Each plate type clutch comprises an essentially cylindrical support20, intemally axially perforated and inserted on said drive shaft 7, in which a cylindrical seat 21 is provided for a series of disks 22 arranged mutually facing each other and being slideably associated, one by one, with the outer grooved cylindrical surface 23 of said seat 21 or with a crown 24, again with grooved profile, arranged inside said essentially cylindrical support 20.
  • each of said cylindrical seats 21 is equal to the outer diameter of those containing the pistons 12 and 13.
  • the pistons 12 and 13 are configured so as to not interfere with each of said crowns 24.
  • the crowns 24 are each welded to a conical toothed wheel.
  • the two conical toothed wheels are arranged symmetrically to each other and freely rotatable on the drive shaft 7, and are coupled to the drive shaft by means of roller bearings 27, 27a and 28, 28a.
  • a driven shaft or propeller shaft 29, supported on said body 2 by bearings not visible in the figure, is arranged on the transverse axis of said disk-like element 8, below said element.
  • a conical toothed wheel or driven gear 30 is keyed on said driven shaft 29 and simultaneously meshes with said toothed wheels 25 and 26.
  • Said drive shaft 7 extends with one of its free ends 31 to couple to an oil pump 32, connected at its delivery to a conventional distributor of the type used in hydraulic circuits, to selectively connect different branches of the circuit.
  • Said free end 31 has two annular recesses, respectively 33 and 34, which communicate with the previously mentioned distributor by means of cylindrical ducts, respectively 35 and 36.
  • the annular recess 33 also communicates, by means of a radial hole 37, with a longitudinal hole formed in said drive shaft 7, which hole is in turn connected, by means of a transverse hole 38, which also traverses the hub 9, to the crown of the piston 12 on which a flattened annular chamber 39 is provided.
  • the annular recess 34 is in turn connected, by means of a radial hole 40, a longitudinal hole 41 and a transverse hole 42, to the crown of the piston 13, having formed thereon a flattened annular chamber 43, similar to the chamber 39 of the piston 12.
  • Another hole 44 which longitudinally transverses the drive shaft 7, communicates, by means of radial holes, all of the bearings and the parts of the reverser 1, to be lubricated to the intake of the oil pump.
  • the operation of the reverser is as follows : the rotation of the drive shaft 7 causes actuation of the pump 32, which sends pressurized oil to the distributor.
  • the pressurized oil pushes the piston 12 against the disks of the clutch 18, engaging it and causing coupling between the disk-like element 8 and the conical toothed wheel 25 which is thus caused to rotate together with the drive shaft 7.
  • the conical toothed wheel 25 moves, in turn, the wheel 30 of the driven shaft 29.
  • the entire mechanism is in an oil bath, so the connection of the intake of the pump 32 to all of the moving parts through the hole 44 allows the circulation of said oil with excellent lubricating action.
  • the same oil used for actuation also serves for lubricating the moving parts.
  • the materials employed, as well as the dimensions, may be any according to the requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
EP88109167A 1987-06-15 1988-06-09 Reversing mechanism for an outboard propulsion power leg Revoked EP0295569B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT4161687 1987-06-15
IT41616/87A IT1218576B (it) 1987-06-15 1987-06-15 Invertitore per piede poppiero

Publications (2)

Publication Number Publication Date
EP0295569A1 EP0295569A1 (en) 1988-12-21
EP0295569B1 true EP0295569B1 (en) 1991-09-11

Family

ID=11252033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88109167A Revoked EP0295569B1 (en) 1987-06-15 1988-06-09 Reversing mechanism for an outboard propulsion power leg

Country Status (3)

Country Link
EP (1) EP0295569B1 (it)
DE (1) DE3864754D1 (it)
IT (1) IT1218576B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0727277Y2 (ja) * 1989-08-28 1995-06-21 石川島播磨重工業株式会社 二重反転軸の動力伝達装置
JPH04143195A (ja) * 1990-10-03 1992-05-18 Yamaha Motor Co Ltd 船内外機の動力伝達装置
DE10005538B4 (de) * 2000-02-08 2009-03-05 Zf Friedrichshafen Ag Bootsantrieb

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2688298A (en) * 1951-02-26 1954-09-07 Hart Carter Co Reversible outboard motor with hydraulic control
GB854786A (en) * 1958-01-14 1960-11-23 Transp Equipment Thornycroft L Improvements in or relating to the propulsion of marine craft
FR1365824A (fr) * 1963-08-09 1964-07-03 Zahnradfabrik Friedrichshafen Mécanisme inverseur applicable en particulier aux véhicules ferroviaires
FR1487430A (fr) * 1966-05-24 1967-07-07 Dev Ind Proclem Soc Et Pont différentiel inverseur
US3556041A (en) * 1967-03-30 1971-01-19 Outboard Marine Corp Exhaust system for marine propulsion device
US3823801A (en) * 1973-09-07 1974-07-16 Twin Disc Inc Clutches with a fluid and cam operated pressure modulating valve

Also Published As

Publication number Publication date
IT8741616A0 (it) 1987-06-15
IT1218576B (it) 1990-04-19
DE3864754D1 (de) 1991-10-17
EP0295569A1 (en) 1988-12-21

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